Plastic Tube Settler for Biological Treatment

Tube settler use multiple tubular channels which sloped ar an angle of 60° abd adjacent to each other, it can combine to form an increased effective settling area. It can provides for a particle settling depth that is significantly less than the settling depth of a comverntional clarifier, reducing settling time.

Tube settlers can capture the settleable fine floc that escapes the clarification zone beneath the tube settlers and allows the larger floc to travel to the tank bottom by a more settleable form. The tube settler's channel collects solids into a compact mass which can promote the solids to slide down the tube channel.

 

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Tube settlers offer an inexpensive method for upgrading existing water treatment plant clarifiers and sedimentation basins to improve performance. It can also reduce the tankage/footprint required in new installations or improve the performance of existing settling basins by reducing the solids loading on downstream filters.

Made by raw PVC material, tube settlers can be easily supported with minimal structures which often incorporate the effluent trough supports. They are available in a variety of module sizes and tube lengths to fit any tank geometry.

The advantages of tube settlers can be applied to new or existing clarifiers/basins of any size:

• Clarifiers/basins equipped with tube settlers which can operate at 2 to 4 times the normal rate of clarifiers/basins without tube settlers.
• It is possible to cut coagulant dosage by up to half while maintaining a lower influent turbidity to the treatment plant filters.
• Less filter backwashing equates to significant operating cost savings for both water and electricity.
• New installations using tube settlers can be designed smaller because of the increased flow capability.
• Flow of existing water treatment plants can be increased through the addition of tube settlers.
• Tube settlers increase allowable flow capacity by expanding settling capacity and increasing the solids removal rate in settling tanks. 

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